Sliding positioning device of sunshade or awning

Abstract

The utility model discloses a sliding positioning device of a sunshade or awning, which comprises a pipe body and a sliding part capable of sliding along the axial direction of the pipe body, a sliding connection mechanism and a sliding position locking mechanism are arranged between the sliding part and the pipe body, and the sliding positioning device is characterized in that the sliding connection mechanism is a gear rack transmission assembly arranged between the sliding part and the pipe body. The device has the advantages that the structure is simple, the sliding part and the pipe body are in relative sliding connection through the gear and rack transmission assembly, friction generated by meshing and rolling connection of the gear and the rack is small, friction damage generated by relative sliding is borne by the gear and the rack, no friction damage is caused to the sliding part and the pipe body, and the service life of the device is prolonged. And the service life of the pipe body can be effectively ensured, so that the overall service life is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor parasols or canopies, in particular to a sliding positioning device for parasols or canopies. Background Art

[0002] Parasols or canopies are commonly used as shade in recreational areas such as plazas, beaches, and lawns, providing a comfortable, cool space for outdoor activities. Parasols or canopies primarily consist of a supporting body and a sunshade. The supporting body of a common parasol or canopy typically consists of a vertical pole for primary support and a diagonal rod for suspending and supporting the sunshade. The vertical and diagonal rods are typically connected by a sliding positioning device, which is used to adjust the relative position of the vertical and diagonal rods, thereby enabling the sunshade to be opened and adjusted at the sunshade angle.

[0003] Currently available sliding positioning devices for parasols or umbrellas typically consist of a sliding connection mechanism and a positioning mechanism for positioning the sliding connection mechanism. Common sliding connection mechanisms fall into two categories: one employing a sleeve mounted on a corresponding tube body, and the other employing a roller mounted on the sliding connection mechanism, which is rollably mounted on the corresponding tube body. Both the sleeve and the roller form direct frictional contact with the tube body, inevitably causing damage to the outer wall of the tube body during sliding. The outer wall of the tube body is typically coated with a protective layer, which wears away over time, exposing the outer wall of the tube body. These exposed portions are susceptible to rust, which in turn reduces the service life of the tube body and, consequently, the overall service life of the umbrella body. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a sliding positioning device for a parasol or a canopy which has a simple structure, is stable in use and has a long service life.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A sliding positioning device for a parasol or canopy comprises a tube body and a sliding component that can slide along the axial direction of the tube body. A sliding connection mechanism and a sliding position locking mechanism are provided between the sliding component and the tube body. The sliding connection mechanism is a gear rack transmission assembly provided between the sliding component and the tube body.

[0007] The rack and pinion transmission assembly includes a rack and a gear meshing with the rack. A side-opening insertion groove is provided in the tubular body along its axial direction. The rack is removably inserted into the insertion groove, and the gear is rotatably mounted on the sliding member. The rack is removably mounted in the insertion groove of the tubular body. When the rack wears out, only the rack needs to be replaced, reducing operating costs.

[0008] The tube body is provided with two slide grooves extending axially through the tube body, the insertion groove is provided between the two slide grooves, a slide bar is provided on the sliding component at a position corresponding to the slide grooves and adapted to cooperate with the slide grooves, the slide bar is connected to the sliding component via a sliding wall, a sliding opening is provided on the tube body at a position corresponding to the sliding wall and adapted to communicate with the corresponding slide grooves, the slide bar is movably provided axially within the corresponding slide groove, and the sliding wall is slidably provided axially within the corresponding sliding opening. Through the cooperation of the slide bar and the slide grooves, the sliding component can be stably supported and mounted on the tube body, and the rigidity of the cooperation between the slide bar and the tube body is utilized to ensure smooth sliding while also providing a relatively rigid connection between the sliding component and the tube body, resulting in a stable, safe, and reliable connection, effectively preventing the sliding component from shaking under external force, thereby enabling the sliding component to be more stably mounted on the tube body, having relatively strong anti-shake and anti-torsion capabilities, and ensuring the stability of the product.

[0009] The sliding position locking mechanism includes a guide member fixedly mounted on the sliding component, a locking card provided in the guide component, and the locking card can reciprocate along the axial direction of the guide component, one end of the locking card is a locking end, the locking end is aligned with the installation position of the gear, the locking end has a locking groove, and a reset member is provided between the other end of the locking card and the guide component, when the sliding component slides into place relative to the tube body, the locking card moves forward to cause at least one gear tooth of the gear to be embedded in the locking groove, and the gear cannot rotate, thereby achieving the locking of the sliding position; when the locking card moves backward to cause the gear teeth on the gear to disengage from the locking tooth groove, the sliding component is unlocked from the tube body, and at this time the sliding component can slide along the axial direction of the tube body; when the sliding position is adjusted to the right position, the locking card is released, and under the drive of the reset member, the locking card moves forward to cause at least one gear tooth of the gear to be embedded in the locking tooth groove again to achieve position locking. The above-mentioned sliding position locking mechanism has a simple structure, stable locking position and easy operation. The locking groove provided on the locking clamp cooperates with the gear teeth on the gear to lock the rotational position of the gear. When the corresponding gear teeth on the gear are embedded in the locking groove, the gear cannot rotate. At this time, the sliding position of the sliding component on the tube body is locked. When the gear teeth on the gear disengage from the locking groove, the gear can be rotated again. By applying force on the sliding component, the position of the sliding component relative to the tube body can be changed.

[0010] The reset member is a spring. In the absence of external force, the spring exerts a supporting force on the locking member, ensuring that the corresponding gear teeth on the gear can be stably embedded in the locking groove, thereby locking the position of the sliding component. When force is applied to retract and unlock the locking member, the locking member exerts a force on the spring, causing the spring to be compressed. This allows the locking member to quickly reset and relock after the external force on the locking member disappears.

[0011] The guide member is a cylindrical structure with an open end. A sliding member is slidably mounted on the guide member. The locking member is slidably connected to the inner cavity of the guide member. The locking member and the sliding member are connected by a connecting rod. The cylindrical wall of the guide member has a waist-shaped through groove arranged along the guide member's axis, and the connecting rod is inserted into the waist-shaped through groove. When unlocking, force is applied to the sliding member, driving it backward, which in turn drives the locking member backward synchronously, making operation convenient.

[0012] The two ends of the slide bar are each detachably provided with a sliding sleeve, the outer wall of which contacts the inner wall of the chute. The sliding sleeve is used to reduce the contact area and frictional resistance between the slide bar and the chute, thereby reducing frictional damage. If the sliding sleeve is severely damaged, it can be replaced separately, effectively reducing maintenance costs.

[0013] The outer wall of the sliding sleeve is provided with a plurality of recessed portions at intervals, and convex portions are formed between adjacent recessed portions, and the convex portions are in contact with the inner wall of the sliding groove, thereby reducing the contact area with the sliding groove and making sliding more labor-saving.

[0014] The sliding sleeve is made of engineering plastic material, so that the sliding sleeve can provide good friction resistance, and after contacting with the rigid pipe body, the sliding sleeve is mainly worn, and the damage to the pipe body is relatively small.

[0015] The sliding component includes a sliding seat and a sliding block. The sliding seat is detachably connected to the sliding block. The gear is rotatably mounted on the sliding block. The slide bar is mounted on the sliding block. The sliding component is composed of the sliding seat and the sliding block. The two are independent entities, and their combined use is more diverse.

[0016] The sliding seat includes a sliding seat main body, and the sliding block includes a mounting portion and a sliding connection portion. The sliding seat main body is provided with a through mounting groove for inserting and installing the mounting portion. The mounting portion is tightly plugged into the mounting groove. The sliding connection portion extends out of the mounting groove. The slide bar is provided on the sliding connection portion. The gear is rotatably provided in the sliding connection portion, and some of the gear teeth extend out of the sliding connection portion. The sliding seat main body is detachably provided with limit caps for forming installation limits at both ends of the mounting portion. This simple structure ensures stable connection and installation of the mounting portion of the sliding block within the sliding seat.

[0017] The sliding block has two mounting walls spaced apart from each other, and the gear is rotatably mounted between the two mounting walls, so that the gear can be stably and rotatably mounted via the two mounting walls.

[0018] The ends of the two installation walls away from the tube body are connected by a connecting wall to form the installation portion. The structure is simple and easy to manufacture.

[0019] The front and rear sides of the mounting portion are respectively provided with anti-drop positioning ribs, so that the mounting portion is T-shaped, and the mounting groove is a T-shaped groove matched with the mounting portion, thereby achieving stable connection and installation of the sliding seat and the sliding block.

[0020] The sliding seat has a through installation cavity for the tube body to be inserted into and installed. The tube body is inserted into the installation cavity, and a gap is provided between the outer wall of the tube body and the inner wall of the installation cavity. The sliding seat is provided to cover the outside of the tube body, making the overall structure more stable.

[0021] The mounting portion is provided with a through-hole, and the position-limiting end cap is provided with a through-hole at a position corresponding to the position-limiting end cap. The position-limiting end cap is detachably connected to the sliding seat by means of a mounting screw threaded through the through-hole. This detachable connection structure is simple, low-cost, and effectively achieves a stable connection and installation between the sliding seat body, the position-limiting end cap, and the sliding block, ultimately forming a single, integrated component.

[0022] Compared with the prior art, the advantages of the present invention are: simple structure, the sliding component and the tube body are relatively slidably connected through the gear rack transmission assembly, the friction of the meshing rolling connection of the gear and the rack is small, and the friction damage caused by the relative sliding is borne by the gear rack, and no friction damage will be caused to the sliding component and the tube body, which can effectively ensure the service life of the tube body and thus ensure the overall service life. After the sliding component slides into position relative to the tube body, the position of the sliding component is locked by the sliding position locking mechanism, and the overall structure is functionally complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the first embodiment of the present invention;

[0025] Figure 3 This is a partial cross-sectional structural diagram of the first embodiment of the present invention in a locked state;

[0026] Figure 4 This is a schematic diagram of the top view of the tube body in the utility model;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of a sliding component in an embodiment of the present utility model;

[0028] Figure 6 This is a schematic diagram of the top view of the main body of the sliding seat in the present invention;

[0029] Figure 7 This is a schematic cross-sectional view of the second embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the exploded structure of the first embodiment of the present utility model;

[0031] Figures 9(a) to 9(e) are reference diagrams of the present invention when used in conjunction with corresponding parasols. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0033] Embodiment 1: As shown in the figure, a sliding positioning device for a parasol or awning includes a tube body 1 and a sliding component that can slide along the axial direction of the tube body 1. A sliding connection mechanism and a sliding position locking mechanism are provided between the sliding component and the tube body 1. The sliding connection mechanism is a gear rack transmission assembly provided between the sliding component and the tube body 1.

[0034] In this embodiment, the rack and pinion transmission assembly includes a rack 2 and a gear 3 meshing with the rack 2. A side-opening insertion groove 11 is provided axially through the tubular body 1. The rack 2 is removably inserted into the insertion groove 11, and the gear 3 is rotatably mounted on a sliding member. The rack 2 is removably mounted in the insertion groove 11 provided on the tubular body 1. When the rack 2 wears, only the rack 2 needs to be replaced, reducing operating costs.

[0035] In this specific embodiment, two slide grooves 12 are provided on the tube body 1 along the axial direction of the tube body 1, and the plug-in groove 11 is provided between the two slide grooves 12. A slide bar 41 that cooperates with the slide groove 12 is provided at a position corresponding to the slide groove 12 on the sliding component. The slide bar 41 is connected to the sliding component through a sliding wall 42. A sliding opening 121 that passes through the axial direction and is connected to the corresponding slide groove 12 is provided at a position corresponding to the sliding wall 42 on the tube body 1. The slide bar 41 can be movably provided in the corresponding slide groove 12 along the axial direction, and the sliding wall 42 can be slidably provided in the corresponding sliding opening 121 along the axial direction. Through the cooperation of the slide bar 41 and the slide groove 12, the sliding component can be stably supported and installed on the tube body 1. By utilizing the cooperation rigidity of the slide bar 41 and the tube body 1, while fully ensuring smooth sliding, the relative rigidity of the connection between the sliding component and the tube body 1 can be taken into account. The connection is firm, safe and reliable, and can effectively prevent the sliding component from shaking under the action of external force. The sliding component can be more stably slidably installed on the tube body 1, has relatively stable anti-shake and anti-torsion capabilities, and ensures the stability of product use.

[0036] When the locking member 6 is moved back and forth, the gear 3 is locked and the gear 3 is locked. The above-mentioned sliding position locking mechanism has a simple structure, stable locking position and easy operation. The locking groove 61 provided on the locking clamp 6 is used to lock the rotation position of the gear 3. When one of the gear teeth 31 on the gear 3 is embedded in the locking groove 61, the gear 3 cannot rotate. At this time, the sliding position of the sliding component on the tube body 1 is locked. When the gear teeth 31 on the gear 3 disengage from the locking groove, the gear 3 can be rotated again, and force is applied to the sliding component to achieve the change of the position of the sliding component relative to the tube body 1.

[0037] In this specific embodiment, there is one locking groove 61 for a gear tooth 31 on the gear 3 to be embedded in. The locking groove divides the locking end into two locking blocks 62. In the locked state, the locking block 62 is embedded between the corresponding two adjacent gear teeth 31.

[0038] In this embodiment, the reset member 7 is a spring. In the absence of external force, the spring exerts a supporting force on the locking member 6, ensuring that the corresponding gear teeth 31 on the gear 3 can be stably embedded in the locking groove, thereby locking the position of the sliding component. When force is applied to retract and unlock the locking member 6, the locking member 6 exerts a force on the spring, causing the spring to be compressed. This allows the locking member 6 to quickly reset and relock after the external force on the locking member 6 disappears.

[0039] In this embodiment, the guide member 5 is a cylindrical structure with an open end. A slider 51 is slidably mounted on the guide member 5. A locking member 6 is slidably connected within the inner cavity of the guide member 5. The locking member 6 and the slider 51 are connected by a connecting rod 52. The cylindrical wall of the guide member 5 has a waist-shaped through groove 53 arranged along the axial direction of the guide member 5. The connecting rod 52 is inserted into the waist-shaped through groove 53. To unlock, force is applied to the slider 51, driving it backward and the locking member 6 to move backward synchronously, making operation convenient.

[0040] In this specific embodiment, the restoring member 7 is disposed between the guide member 5 and the sliding member 51 .

[0041] In this embodiment, sliding sleeves 410 are detachably mounted on each end of the slide bar 41. The outer wall of the sliding sleeves 410 engages with the inner wall of the chute 12. The sliding sleeves 410 reduce the contact area and frictional resistance between the slide bar 410 and the chute 12, thereby minimizing frictional damage. If the sliding sleeves 410 become severely damaged, they can be replaced separately, effectively reducing maintenance costs.

[0042] In this embodiment, the outer wall of the sliding sleeve 410 is provided with a plurality of recessed portions 411 at intervals, with protrusions 412 formed between adjacent recessed portions 411. The protrusions 412 contact and cooperate with the inner wall of the chute 12, thereby reducing the contact area with the chute 12 and making sliding more labor-saving.

[0043] In this embodiment, the sliding sleeve 410 is made of engineering plastic material, so that the sliding sleeve 410 can provide good friction resistance, and after contacting the rigid pipe body 1, the sliding sleeve 410 is mainly worn, and the pipe body 1 is less damaged.

[0044] In this embodiment, the sliding component includes a sliding seat 8 and a sliding block 4. The sliding seat 8 is detachably connected to the sliding block 4. The gear 3 is rotatably mounted on the sliding block 4. The sliding bar 41 is mounted on the sliding block 4. The sliding component is composed of the sliding seat 8 and the sliding block 4. The two are independent entities, and their combined use is more diverse.

[0045] In this specific embodiment, the sliding seat 8 includes a sliding seat body 81, and the sliding block 4 includes a mounting portion 45 and a sliding connection portion 46. The sliding seat body 81 is provided with a through mounting groove 811 for inserting and installing the mounting portion 45. The mounting portion 45 is tightly inserted and installed in the mounting groove 811. The sliding connection portion 46 extends out of the mounting groove 811. The slide bar 41 is disposed on the sliding connection portion 46. The gear 3 is rotatably disposed in the sliding connection portion 46, and some of the gear teeth 31 of the gear 3 extend out of the sliding connection portion 46. The sliding seat body 81 is detachably provided with limit caps 82 for forming installation limits at both ends of the mounting portion 45. This simple structure ensures stable connection and installation of the mounting portion 45 of the sliding block 4 within the sliding seat 8.

[0046] In this embodiment, the sliding block 4 has two mounting walls 47 spaced apart from each other, and the gear 3 is rotatably mounted between the two mounting walls 47. The two mounting walls 47 ensure stable rotatable mounting of the gear 3.

[0047] In this embodiment, the ends of the two mounting walls 47 away from the tube body 1 are connected by a connecting wall 48 to form the mounting portion 45. The structure is simple and easy to manufacture.

[0048] In this embodiment, the front and rear sides of the mounting portion 45 are respectively provided with anti-drop positioning ribs 451, so that the mounting portion 45 has a T-shaped structure, and the mounting groove 811 is a T-shaped groove that matches the mounting portion 45, thereby achieving a stable connection and installation between the sliding seat 8 and the sliding block 4.

[0049] In this specific embodiment, a through-mounting hole 452 is provided on the mounting portion 45, and a through-mounting through-hole 821 is provided on the position limiting end cap 82 at a position corresponding to the mounting hole 452. The mounting screw 100 passes through the mounting through-hole 821 and is screwed into the mounting hole 452 to achieve detachable connection and installation of the limiting end cap 82 on the sliding seat 8. This detachable connection structure is simple and low-cost, and can effectively achieve a stable connection and installation between the sliding seat main body 81, the limiting end cap 82, and the sliding block 4, ultimately forming a single integral component.

[0050] When specifically installed on a parasol or canopy, the tube body 2 can be the tube body of the vertical pole B or the tube body of the diagonal pole A. When the sliding seat 1 is slidably installed on the tube body 2 of the vertical pole B, one end of the tube body 2 of the diagonal pole A is rotatably connected to the sliding seat 8. When the sliding seat 1 is slidably installed on the tube body of the diagonal pole A, the top of the tube body of the vertical pole B is rotatably connected to the sliding seat 8.

[0051] Example 2: Other parts are the same as Example 1, except that the sliding seat 8 has a through-hole installation cavity 80 for the tube body 1 to be inserted and installed. The tube body 1 is inserted into the installation cavity 80, and a gap is provided between the outer wall of the tube body 1 and the inner wall of the installation cavity 80. The sliding seat 8 is arranged to cover the outside of the tube body 1, making the overall structure more stable.

Claims

1. A sliding positioning device for a parasol or sunshade, comprising a tube body and a sliding member that can slide along the axial direction of the tube body, wherein a sliding connection mechanism and a sliding position locking mechanism are provided between the sliding member and the tube body, characterized in that The sliding connection mechanism is a rack and pinion transmission assembly arranged between the sliding component and the tube body.

2. A sliding positioning device for a parasol or canopy as claimed in claim 1, characterized in that The rack and pinion transmission assembly includes a rack and a gear meshing with the rack. A plug-in groove with a side opening is provided on the tube body along the axial direction of the tube body. The rack is detachably fitted and inserted into the plug-in groove, and the gear is rotatably provided on the sliding component.

3. A sliding positioning device for a parasol or awning as claimed in claim 2, characterized in that Two slide grooves are provided on the tube body along the axial direction of the tube body, the plug-in groove is provided between the two slide grooves, a slide bar matching the slide groove is provided at a position corresponding to the slide groove on the sliding component, the slide bar is connected to the sliding component through a sliding wall, and a sliding opening that passes through the axial direction and is connected to the corresponding slide groove is provided at a position corresponding to the sliding wall on the tube body, the slide bar can be movably provided in the corresponding slide groove along the axial direction, and the sliding wall can be slidably provided in the corresponding sliding opening along the axial direction.

4. A sliding positioning device for a parasol or awning as claimed in claim 2, characterized in that The sliding position locking mechanism includes a guide member fixedly mounted on the sliding component, a locking card provided in the guide component, and the locking card can reciprocate along the axial direction of the guide component, one end of the locking card is a locking end, the locking end is aligned with the installation position of the gear, the locking end has a locking groove, and a reset member is provided between the other end of the locking card and the guide component, when the sliding component slides into place relative to the tube body, the locking card moves forward to cause at least one gear tooth of the gear to be embedded in the locking groove, and the gear cannot rotate, thereby achieving the locking of the sliding position; when the locking card moves backward to cause the gear teeth on the gear to disengage from the locking tooth groove, the sliding component is unlocked from the tube body, and at this time the sliding component can slide along the axial direction of the tube body; when the sliding position is adjusted to the right position, the locking card is released, and under the drive of the reset member, the locking card moves forward to cause at least one gear tooth of the gear to be embedded in the locking tooth groove again to achieve position locking.

5. A sliding positioning device for a parasol or awning as claimed in claim 4, characterized in that The guide member is a cylindrical structure with an open end. A sliding member is slidably sleeved on the guide member. The locking card is slidably connected in the inner cavity of the guide member. The locking card and the sliding member are connected by a connecting rod. The cylindrical wall of the guide member has a waist-shaped through groove arranged along the axial direction of the guide member, and the connecting rod is inserted into the waist-shaped through groove.

6. A sliding positioning device for a parasol or awning as claimed in claim 3, characterized in that Sliding sleeves are detachably provided on the two ends of the sliding bar, and the outer wall of the sliding sleeve is in contact with the inner wall of the sliding groove.

7. A sliding positioning device for a parasol or awning as claimed in claim 3, characterized in that The sliding component comprises a sliding seat and a sliding block. The sliding seat is detachably connected to the sliding block. The gear is rotatably arranged on the sliding block. The sliding bar is arranged on the sliding block.

8. A sliding positioning device for a parasol or awning as claimed in claim 7, characterized in that The sliding seat includes a sliding seat main body, and the sliding block includes a mounting portion and a sliding connection portion. The sliding seat main body is provided with a through mounting groove for inserting and installing the mounting portion, and the mounting portion is tightly fitted and installed in the mounting groove. The sliding connection portion extends outward and is arranged outside the mounting groove. The sliding bar is arranged on the sliding connection portion. The gear is rotatably arranged in the sliding connection portion, and some gear teeth of the gear extend out of the sliding connection portion. The sliding seat main body is detachably provided with a limit end cover for forming an installation limit at the two ends of the mounting portion.

9. A sliding positioning device for a parasol or awning as claimed in claim 8, characterized in that The front side and the rear side of the mounting portion are respectively protruded with anti-slip positioning ribs, so that the mounting portion is a T-shaped structure, and the mounting groove is a T-shaped groove matched with the mounting portion.

10. A sliding positioning device for a parasol or awning according to claim 7, characterized in that The sliding seat has a through installation cavity for the tube body to be inserted into and installed. The tube body is inserted into the installation cavity, and a gap is provided between the outer wall of the tube body and the inner wall of the installation cavity.

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